Stock Shock Absorber Specs for 78 - Ford Bronco Forum
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post #1 of 7 (permalink) Old 01-29-2017, 06:47 AM Thread Starter
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Stock Shock Absorber Specs for 78

Hi. I did some searches and was unsuccessful in finding an answer, so here goes.

My 78 Bronco project is underway with the body off the frame. I bought stock shicks from LMC and they seem decidedly too short. Now, when trying to install them, it was with only the frame (no engine, tranny or even body).

On the front, the post of the Monroe shock at full extension pokes thru the top shock mount, but not enough to properly fasten it. In theory i could put som weight on the frame to compress the spring enough to tighten the nut. My concern is over whether or not this would be normal. And it also seems like once i took the weight off, the frame would rise to the point where the shock would be at max extension. Then i wonder if when i out the 460 in it if it would be right. I counted the numbe4 of coils on the springs (not terribly accurate, i jnow, but all i could do). My coil springs look newer and not stock. The number of coils was 10. Examining the Das Bronco episode of the Trucks TV show, i counted only 9 coils. Maybe the springs are larger?

On the back, there are jo lift blocks. Maybe the springs were re-a4ched or something. However, holding the KYB shocks up there, it seems like i would have the same issue in the rear. (I did not remove the band from factory packaging that holds the shock in compressed state).

My questions are:
1. Does anyone have the stock length for front and rear shocks (compressed, and at full extension), and the stock travel length?

2. Does anyone know how to measure for shocks or to tell how much lift is in my springs?

I will say that the Bronco when i bought it did certainly not look lifted at all. I will try attaching a before pic with the FE 390 installed.



The pic is with the drive train installed and with 33" tires.

Thanks.
Rod

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Acquired Oct 2014: 78 Bronco, 390FE, C6, Resto-Mod Project
Target: 460; AOD and NP205 (adapters)
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post #2 of 7 (permalink) Old 01-29-2017, 03:06 PM
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78 1978 Ford Bronco Shock Absorber - Suspension - AC Delco, Monroe, Pro Comp Suspension, Rancho, Skyjacker, Superlift, Tuff Country, Front, Front Inner, Front Left, Front Outer, Front Right, Rear - PartsGeek

of look up Monroe number and then go to Monroe online and look at specs by shock #

with no body or engine ,the suspension will be topped out and the shock will be at full extension
in working properly , the shock is what limits the extension of the spring
no shock and front spring can pop right out
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post #3 of 7 (permalink) Old 02-02-2017, 07:18 PM
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I can mesure the stock ones I removed last year, just let me know if you need any mesurements.
Marc
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post #4 of 7 (permalink) Old 02-03-2017, 07:23 AM Thread Starter
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Originally Posted by kochic View Post
I can mesure the stock ones I removed last year, just let me know if you need any mesurements.
Marc
That would be awesome... if you can measure the compressed as well as the full extension length that would be great. I presume they measure from tip to tip.

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post #5 of 7 (permalink) Old 02-03-2017, 06:03 PM
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I will mesure then from center to center of the eyes for the rear shocks and center of the eye to the beginning of the stud for the fronts.
I will post the mesurement tomorrow.
Marc
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post #6 of 7 (permalink) Old 02-04-2017, 03:05 PM
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Here are the number of my stock height Monroe shocks.
Rear shocks 34958 34958 :: e-Catalog :: MONROE® SHOCKS & STRUTS

front of front axle 34907 34907 :: e-Catalog :: MONROE® SHOCKS & STRUTS

aft of front axle 34906 34906 :: e-Catalog :: MONROE® SHOCKS & STRUTS

You can see all the measurement under the tech specs tab.

I have the same mesurement with a tape measure.
Marc
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post #7 of 7 (permalink) Old 02-04-2017, 06:07 PM Thread Starter
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Quote:
Originally Posted by kochic View Post
Here are the number of my stock height Monroe shocks.
Rear shocks 34958 34958 :: e-Catalog :: MONROE® SHOCKS & STRUTS

front of front axle 34907 34907 :: e-Catalog :: MONROE® SHOCKS & STRUTS

aft of front axle 34906 34906 :: e-Catalog :: MONROE® SHOCKS & STRUTS

You can see all the measurement under the tech specs tab.

I have the same mesurement with a tape measure.
Marc
Thanks!!!

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Acquired Oct 2014: 78 Bronco, 390FE, C6, Resto-Mod Project
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